meanwhile performed that update, but unfortunately no longer dual mono and get sound from one side.
after adjusting alsamixer (dual mono), the raspberry pi not starts up at all.
meanwhile a new sd card has been flashed, but unfortunately I only get sound from one side.
I’m going to try the link below to get dual mono back.
**edit:**no sound at all after adjustments.
only after the first boot after switching on piano 2.1, the sound comes from both speakers, all adjustments after that it no longer works and I get no sound from it and then I am forced to flash the sd card again.
in the meanwhile sent a log.
